3/2LPE Steel Layer Pipeline Anti-corrosive Spraying Solution

3/2lpe Steel Layer Pipeline Anti-Corrosive Spraying Solution

Functionality

• Three-Layer Coating Application
  • The first layer is typically a fusion-bonded epoxy (FBE) coating. This layer provides excellent adhesion to the steel surface and acts as a barrier against moisture and corrosive agents.
  • The second layer is a copolymer adhesive, which bonds the first layer to the third layer.
  • The third layer is a polyethylene (PE) coating. This layer provides mechanical protection, UV resistance, and further enhances the corrosion resistance of the pipeline.
    

    

    
• Automated Process
  • The production line is designed to automate the coating process. It usually includes sections for steel pipe pre-treatment (such as sandblasting to remove rust and impurities), coating application, curing, and quality inspection.
  • This automation ensures consistent coating quality and high production efficiency.

Benefits

• Enhanced Mechanical Strength
  • The polyethylene layer provides excellent impact resistance, protecting the pipeline from mechanical damage during transportation and installation.
  • The overall coating system also helps to prevent stress corrosion cracking, which can be a significant issue in pipelines exposed to harsh environments.
• Electrical Insulation
  • The 3PE coating system has excellent electrical insulation properties. This is crucial for pipelines that are used in environments where electrical conductivity could lead to corrosion or other issues.
  • The insulation helps to prevent galvanic corrosion, which occurs when two dissimilar metals are in contact in the presence of an electrolyte.
• Durability
  • The combination of the three layers provides long-term protection against corrosion. The epoxy layer provides a strong bond to the steel, the adhesive layer ensures good interlayer adhesion, and the polyethylene layer offers excellent resistance to environmental factors such as UV radiation, moisture, and chemical attack.
  • This durability means that pipelines coated with 3PE can have a significantly longer service life compared to those with less advanced coatings.

Applications

• Oil and Gas Pipelines
  • The 3PE coating is widely used in oil and gas transmission pipelines. These pipelines often need to transport fluids over long distances and through harsh environments, making the corrosion resistance and mechanical strength provided by the 3PE coating essential.
  • The coating helps to prevent leaks and maintain the integrity of the pipeline, which is critical for safety and environmental protection.
• Water Transmission Pipelines
  • For water pipelines, the 3PE coating provides protection against water-related corrosion. It helps to ensure that the water remains uncontaminated and that the pipeline remains structurally sound.
  • The coating also helps to reduce the risk of biofouling, which can be a problem in water pipelines.
• Other Fluid Transmission Pipelines
  • The 3PE coating can also be used for pipelines that transport other types of fluids, such as chemicals or wastewater. The coating's resistance to a wide range of corrosive substances makes it a versatile solution for various industrial applications.

Coating Structure:
First Layer: Fusion-bonded epoxy powder (FBE > 100µm)
Second Layer: Adhesive (AD) 170 ~ 250µm
Third Layer: Polyethylene (PE) 2.5 ~ 3.7mm

Key Features:
·Enhances pipe lifespan from 5-10 years to 50-100 years
·High mechanical strength, excellent electrical insulation, waterproof, wear-resistant, and anti-aging properties
·Suitable for harsh environments and corrosive conditions

Equipment Composition
Rust Removal Equipment: Includes shot blast cleaning machine, dust collectors, and rust removal PLC control system.
Coating Equipment: Features powder spraying device, heating system, coating devices, cooling spray, and extruders.
Platform Equipment: Steel pipe platform, storage platform, hydraulic equipment.
Groove Equipment: Includes PE beveling machines and lifting machinery.
Compressed Air Equipment: Air compressors, precision filters, and gas tanks.

Technological Process
Pipe Input: Upload pipes
Conveying: Pipe screw conveyor
Rust Removal: Intermediate frequency heating
Coating: Epoxy powder coating, adhesive, and polyethylene
Cooling: Spray cooling system
Finishing: Grinding and unloading pipes

Specifications
Pipe Diameter Range: Φ159 ~ Φ1220
Coating Thickness: 80 ~ 800µm
Production Output:
Max. 3-8 km/day
Annual processing capacity: 2 million square meters (Φ508mm)
Coating Standards: Meets SY/T0413-2002, GB/T23257-2009, German DIN 30670, American Corrosion Association, and other international standards.

Main Equipment of 3PE anticorrosion processing
Configuration List

Frequently Asked Questions
What is the pipe diameter range the equipment can produce?
-48-219mm, 219-1220mm, 800-1600mm, 1000-2400mm
What is the sandblasting grade?
-SA2.5
What is the anti-corrosion coating standard?
-Meets multiple international standards, including SY/T0413-2002 and DIN 30670.
What is the delivery time?
-2-3 months after deposit.
What is the production output?
-Max. 3-8 km/day, annual capacity of 2 million square meters (Φ508mm).
What is the coating thickness?
-80 ~ 800µm.
Where has the 3PE equipment been sold?
-Countries including Russia, Iran, UAE, India, Belarus, Kazakhstan, etc.
What after-sales services are offered?
-Warranty: 12 months for mechanical parts, 6 months for electrical parts.
Support: Technical services, training, and guidance for operators.

Qingdao Huashida Machinery Co., Ltd.